Final answer:
In the communication process, the speech on nutrition given to pregnant women by a nurse is classified as the Message. It is what the nurse is trying to convey to the group.
Step-by-step explanation:
Within the model of the communication process, the speech given by a nurse on nutrition to a group of pregnant women is known as the Message. The message is the content or information that the source (nurse) wishes to convey to the receiver (pregnant women). It is the core element that is encoded by the source and decoded by the receiver, making it crucial that the message is clear and understandable to ensure effective communication.